Take-up device for sewing-machines



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UNITED STATES PATENT OFFICE.

AUGUST BECKER, OF ARLINGTON HEIGHTS, ILLINOIS.

TAKE-UP DEVICE FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 323,999, dated August11, 1885.

Application filed September 11, 1883. (No model.) i

To aZZ whom it may concern.-

Be it known that I, AUGUST BEoKER, of Arlington Heights, in the countyof Cook and State of Illinois, have invented certain new and usefulImprovements in Take-Up Devices for Sewing-Machines; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form a part of thisspecification.

My invention relates to sewing-machines, and is adapted more especiallyto be applied to machines known as the Singer Sewing- Machine,(lock-stitch.)

The object of the invenlion is to improve the mechanism for operatingthe take -up lever between the tension device and the eye of the needle.

To the accomplishment of the above the invention consists of the certainnovel devices and combination of devices hereinafter described andclaimed.

Reference will be made to the accompanying drawings, in which Figure 1is a front elevation of a casing formed on the front end of thegoose-neck of the machine, and in which the needle and pressure bars aresituated, the front plate of said casing being partly broken away. Fig.2 is avertical section ofthe same; Fig. 3, a view of the same with theparts in closed therein removed and showing the posi tion of the mainshaft; Fig. l, a section on line was ofFig. 3; Fig. 5, a section on lineq q of Fig. 4. 7

Like letters refer to like parts in each view.

As in theSinger machine, mine is provided with a bed-plate, upon whichis mounted a goose-neck oroverhanging arm. (Not shown.) Motion isimparted to the needle-bar B from a pin, a, formed on a crank-disk, b,located on the end of a horizontal shaft, 0, this pin entering aheart-shaped groove, d, in a block, 0, attached to said needle-bar. Thetake-up lever 0 consists of an arm curved, as shown, and provided on itsouter or free end with an eye through which the thread is passed to theneedle. This lever is passed through suitable slots made in theneedle-bar and, through the front face of easing D, which is cast uponthe front end of the goose-neck, said lever being secured by a screw, f,or other suitable means, in a vibrating hub, g,

situated in a slot formed in the rear of casing D, and mounted on ascrew, h, passed through said slot. A spring, i, is coiled around screwh to press the lever down, one end of said spring entering a slot madein hub g, and the other in a slot formed in easing D, at one side of theslot-,in which hub g is pivoted. Hub 9 is formed with a lug, j, which isformed directly below lever O, and which rests when in position upon aprojecting lug, 70, formed on the edge of a hinged arm, Z, said armresting upon a cam-surface, m, formed on the rear face of crank-disk b,so that upon the revolution of the shaft 0 and the crank-disk b thetake-up lever will be raised and lowered at certain intervals. Erepresents the pressurebar; F, the lever for operating the same; n, aspring for applying the pressure thereto, and 0 notches made in theplate D to accommodate said spring.

I am aware of the existence of Letters Patent No. 183,678, issued onOctober 24:, 1876, to J. Jamieson, in which a branch arm of the take-uplever is arranged to contact with a cam-surface to operate such take-uplever, but in which. the take-up lever is not mounted in a vibratinghub, and in which there is no arm interposed between such a hub and thecam-surface, and therefore I lay no claim to such a construction.

I am also aware of the existence of Letters Patent No. 136,324, issuedFebruary 25, 1873, to J. T. Jones, in which the pivot-pin of the take-upl ver is provided with an arm arranged to contact with a cam-surface tooperate such lever, and therefore I expressly disclaim such anarrangement; but

What I claim is- I I The combination, with vibrating-hub 9, providedwith lugj and mounted on screw h, pro vided with spring 2', and take-uplever C, re-

movably mounted in said hub, ofdisk b, provided with camsurface m, andlever Z, located between cam-surfacem and lug j, said lever beingpivoted in plate D and entirely independent of the take-up lever, as setforth.

In testimony that I claim the foregoing as my invention I affix mysignature in presence of two witnesses.

AUGUST BECKER. \Vitn esses:

A. W. OBERMANN, M. J. CLAGE'IT,

